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cpython/PCbuild/build_ssl.py

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# Script for building the _ssl and _hashlib modules for Windows.
# Uses Perl to setup the OpenSSL environment correctly
# and build OpenSSL, then invokes a simple nmake session
# for the actual _ssl.pyd and _hashlib.pyd DLLs.
# THEORETICALLY, you can:
# * Unpack the latest SSL release one level above your main Python source
# directory. It is likely you will already find the zlib library and
# any other external packages there.
# * Install ActivePerl and ensure it is somewhere on your path.
# * Run this script from the PCBuild directory.
#
# it should configure and build SSL, then build the _ssl and _hashlib
# Python extensions without intervention.
# Modified by Christian Heimes
# Now this script supports pre-generated makefiles and assembly files.
# Developers don't need an installation of Perl anymore to build Python. A svn
# checkout from our svn repository is enough.
#
# In Order to create the files in the case of an update you still need Perl.
# Run build_ssl in this order:
# python.exe build_ssl.py Release x64
# python.exe build_ssl.py Release Win32
import os, sys, re, shutil
# Find all "foo.exe" files on the PATH.
def find_all_on_path(filename, extras = None):
entries = os.environ["PATH"].split(os.pathsep)
ret = []
for p in entries:
fname = os.path.abspath(os.path.join(p, filename))
if os.path.isfile(fname) and fname not in ret:
ret.append(fname)
if extras:
for p in extras:
fname = os.path.abspath(os.path.join(p, filename))
if os.path.isfile(fname) and fname not in ret:
ret.append(fname)
return ret
# Find a suitable Perl installation for OpenSSL.
# cygwin perl does *not* work. ActivePerl does.
# Being a Perl dummy, the simplest way I can check is if the "Win32" package
# is available.
def find_working_perl(perls):
for perl in perls:
fh = os.popen(perl + ' -e "use Win32;"')
fh.read()
rc = fh.close()
if rc:
continue
return perl
print("Can not find a suitable PERL:")
if perls:
print(" the following perl interpreters were found:")
for p in perls:
print(" ", p)
print(" None of these versions appear suitable for building OpenSSL")
else:
print(" NO perl interpreters were found on this machine at all!")
print(" Please install ActivePerl and ensure it appears on your path")
return None
# Locate the best SSL directory given a few roots to look into.
def find_best_ssl_dir(sources):
candidates = []
for s in sources:
try:
# note: do not abspath s; the build will fail if any
# higher up directory name has spaces in it.
fnames = os.listdir(s)
except os.error:
fnames = []
for fname in fnames:
fqn = os.path.join(s, fname)
if os.path.isdir(fqn) and fname.startswith("openssl-"):
candidates.append(fqn)
# Now we have all the candidates, locate the best.
best_parts = []
best_name = None
for c in candidates:
parts = re.split("[.-]", os.path.basename(c))[1:]
# eg - openssl-0.9.7-beta1 - ignore all "beta" or any other qualifiers
if len(parts) >= 4:
continue
if parts > best_parts:
best_parts = parts
best_name = c
if best_name is not None:
print("Found an SSL directory at '%s'" % (best_name,))
else:
print("Could not find an SSL directory in '%s'" % (sources,))
sys.stdout.flush()
return best_name
def create_makefile64(makefile, m32):
"""Create and fix makefile for 64bit
Replace 32 with 64bit directories
"""
if not os.path.isfile(m32):
return
with open(m32) as fin:
with open(makefile, 'w') as fout:
for line in fin:
line = line.replace("=tmp32", "=tmp64")
line = line.replace("=out32", "=out64")
line = line.replace("=inc32", "=inc64")
# force 64 bit machine
line = line.replace("MKLIB=lib", "MKLIB=lib /MACHINE:X64")
line = line.replace("LFLAGS=", "LFLAGS=/MACHINE:X64 ")
# don't link against the lib on 64bit systems
line = line.replace("bufferoverflowu.lib", "")
fout.write(line)
os.unlink(m32)
def fix_makefile(makefile):
"""Fix some stuff in all makefiles
"""
if not os.path.isfile(makefile):
return
# 2.4 compatibility
fin = open(makefile)
if 1: # with open(makefile) as fin:
lines = fin.readlines()
fin.close()
fout = open(makefile, 'w')
if 1: # with open(makefile, 'w') as fout:
for line in lines:
if line.startswith("PERL="):
continue
if line.startswith("CP="):
line = "CP=copy\n"
if line.startswith("MKDIR="):
line = "MKDIR=mkdir\n"
if line.startswith("CFLAG="):
line = line.strip()
for algo in ("RC5", "MDC2", "IDEA"):
noalgo = " -DOPENSSL_NO_%s" % algo
if noalgo not in line:
line = line + noalgo
line = line + '\n'
fout.write(line)
fout.close()
def run_configure(configure, do_script):
print("perl Configure "+configure)
os.system("perl Configure "+configure)
print(do_script)
os.system(do_script)
def main():
build_all = "-a" in sys.argv
if sys.argv[1] == "Release":
debug = False
elif sys.argv[1] == "Debug":
debug = True
else:
raise ValueError(str(sys.argv))
if sys.argv[2] == "Win32":
arch = "x86"
configure = "VC-WIN32"
do_script = "ms\\do_nasm"
makefile="ms\\nt.mak"
m32 = makefile
elif sys.argv[2] == "x64":
arch="amd64"
configure = "VC-WIN64A"
do_script = "ms\\do_win64a"
makefile = "ms\\nt64.mak"
m32 = makefile.replace('64', '')
#os.environ["VSEXTCOMP_USECL"] = "MS_OPTERON"
else:
raise ValueError(str(sys.argv))
make_flags = ""
if build_all:
make_flags = "-a"
# perl should be on the path, but we also look in "\perl" and "c:\\perl"
# as "well known" locations
perls = find_all_on_path("perl.exe", ["\\perl\\bin", "C:\\perl\\bin"])
perl = find_working_perl(perls)
if perl is None:
print("No Perl installation was found. Existing Makefiles are used.")
print("Found a working perl at '%s'" % (perl,))
sys.stdout.flush()
# Look for SSL 2 levels up from pcbuild - ie, same place zlib etc all live.
ssl_dir = find_best_ssl_dir(("..\\..",))
if ssl_dir is None:
sys.exit(1)
old_cd = os.getcwd()
try:
os.chdir(ssl_dir)
# rebuild makefile when we do the role over from 32 to 64 build
if arch == "amd64" and os.path.isfile(m32) and not os.path.isfile(makefile):
os.unlink(m32)
# If the ssl makefiles do not exist, we invoke Perl to generate them.
# Due to a bug in this script, the makefile sometimes ended up empty
# Force a regeneration if it is.
if not os.path.isfile(makefile) or os.path.getsize(makefile)==0:
if perl is None:
print("Perl is required to build the makefiles!")
sys.exit(1)
print("Creating the makefiles...")
sys.stdout.flush()
# Put our working Perl at the front of our path
os.environ["PATH"] = os.path.dirname(perl) + \
os.pathsep + \
os.environ["PATH"]
run_configure(configure, do_script)
if debug:
print("OpenSSL debug builds aren't supported.")
#if arch=="x86" and debug:
# # the do_masm script in openssl doesn't generate a debug
# # build makefile so we generate it here:
# os.system("perl util\mk1mf.pl debug "+configure+" >"+makefile)
if arch == "amd64":
create_makefile64(makefile, m32)
fix_makefile(makefile)
shutil.copy(r"crypto\buildinf.h", r"crypto\buildinf_%s.h" % arch)
shutil.copy(r"crypto\opensslconf.h", r"crypto\opensslconf_%s.h" % arch)
# Now run make.
if arch == "amd64":
rc = os.system(r"ml64 -c -Foms\uptable.obj ms\uptable.asm")
if rc:
print("ml64 assembler has failed.")
sys.exit(rc)
shutil.copy(r"crypto\buildinf_%s.h" % arch, r"crypto\buildinf.h")
shutil.copy(r"crypto\opensslconf_%s.h" % arch, r"crypto\opensslconf.h")
#makeCommand = "nmake /nologo PERL=\"%s\" -f \"%s\"" %(perl, makefile)
makeCommand = "nmake /nologo -f \"%s\"" % makefile
print("Executing ssl makefiles:", makeCommand)
sys.stdout.flush()
rc = os.system(makeCommand)
if rc:
print("Executing "+makefile+" failed")
print(rc)
sys.exit(rc)
finally:
os.chdir(old_cd)
sys.exit(rc)
if __name__=='__main__':
main()
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